Electrode.



' so so 52 2b whom 1'15 may concem it known that I, JosnPH L. HAY- DJ1-i',-tt citizen of the United States, residing atfi-chenec'tzicly, county of Schenectazl tote of New York, have invented. certs new and usefullinprotwinents in Electrodes, of which the following is n specification.

My invention has reference teen electrode of the flaming; type in Which,es is well known, most 01' the light is emitted. from the arc instead of from the incandescent tip or tips of one 01 boththe electrodes, is the case when simple carbon electioiles one used.

In a former application, Serial No. 571,105, filed July 9, 1910, I have pointed out that While the titanium arc is wiiiteemi eiiicicnt, it is generally un'steacly i that its operation is greatly ii'nproved by the edfluorin may be introduced as element of compound in which not only a metal other than titanium is present, but in which titsniuin is also present, as in that case a larger amount of iiuorin relative to the metal othei? than titanium, may be intz otlnceo than Woultl be otherwise possible. it was also pointed out that calcium titanofiuoi'icl tfla lih end cerium ,7 litenowiuoi'iil (CeTiF are psrticuleriy valuable elecconstituents, the cal-2" n titano-iiuoritl out cejl,

noi'icl For 1, the total oclueed by the urn titnno-fluoothei condii anti uoricl, potassium titnno fiUOZlCl. of these com- 'icinity of the are snot the luminous ors 0 ci'intinnously evenly enter the 1's. I find t certain of the titano-fiuoi'iiis smnewh iu'istabie end form dissocim nioducts, This is especisll tique of the c" eline titunotiuorids, andv niortffparticw of: lithium titsnofiuoricl. There eppeers to be tendency to form hyciio-fluoric gpcciflcetion of Lettc s ZFatent.

Apniicetion flied ifiey 1,

ciition of a fluoi'in compound, and that the,

scitl W ich splits eff, the resulting conip'ouncl taking up oxygen :1 (l forming the metal oxy-tittmo timid. The chemical tiction, howevec; as the resulting fitocl- 110*, 3e to be wept-ex and is not 'tho-" cod. 1 tiniiphowever, that l stcrizil accomplishes the pinoit y invention quite 52B ivell its the pure slimline tit Will bcunclei'stcocl -en it re it in the claims to ti iioi'io' s, pelitictiler'lj to the silt c uo z'ifl, Iln'cluclenot c titsuoiiuotitls but the itson the pm. some on @ibtinctsfofn" thefei om.

T. hile E time resistive calcium titanoiiuoiricl anti ceriuni titan c .liioi id as earth metal titenmfltioritls which one es ecially satisfactory fOF'iZilQ m1; invenion, other earth metal titeno-filiolitis his}? be used, snclpa rticulzirly l have found that betiuin titnno iiuoriet, "EhiOZfifiiilZil",iliflllO- i titano-fiuoritl may advent; :GUilSif/ be employed.

i have made an excellent electrode in sc- Ck nce with my invention by using the following con itucnts in the following pi it titsno-tiuoriil 80%; so-

oiuin i 5%, {H161 the ieumindei carbon r sodium or potassium titanohowever, may be used with either. calcium titsncdiuoricl or cesium titano- I have given the pro-portions of i stitueni's suitable for making an electroe, it Wilibe understood, that these prio- "oortions can "Vary gresly Without departing; itioi'zi my invention. 1 have found, for instance, that in some cases it is desirable to use as i inch as 50% of the calcium titziuoflu-silo oi" cerium titano-iiuoritl and that as much 15-5)?) of the alkaline titiiuo-tluoiid may, under some conditions, he used.

' eve mode excellent electrodes i i hile It i with the materials above enumerated, niul usually prefer that the electrodes should be inside .l ely of such materials, under certain cont] other materials maybe zulvantageo'usly added. Thus l iisvc made a good yellow tisine electrode by the mixture of calcium iiuoi'id with calcium titano fiuoricl, sodium titano-fiuoricl ancl carbon. Under other conditions, particularly when e White flame electrode desired barium iiuiiiiid can be advantageously employed. in

conjunction with cerium titsnoiiuoricl, on

alkaline titano-fiuorid and carbon in order to counteract the yellow color resulting from the use of thealkaline titano-fluorid. It will also; be understood that any suitable flux may, if desired, be added to the electrode.

I am awareof an application, Serial No. 697,314, filed May 14, 1912, in the name of Emile J. Guay, for an electrode containing an earth titano-fluorid, an alkaline titanofluorid and barium-fluorid, together with carbon, the barium fluorid being added to correct the color value of the alkaline titanofluorid, and I do not herein claim the method of correcting the color value of lightby the addition of barium fluorid as this is not my invention. 7

It will be understood that in myelectrode the carbon performs its usual function in a flaming electrode, that is, it gives conductivity to the electrode and furnishes conduotive vapors for the arc and forms a conducting tip on the arcing end of theelectrode from which the arc may be established.

What I claim as new and desire to secure by Letters Patent of the United States, is

1. An electrode containing carbon, an earth metal titano-fiuorid and analkaline titano-fluorid.

2. A carbon electrode containing from five to fifty per cent. of an earth metal titanofluorid and less than fifteen per cent. of an alkaline titano-fluorid. I

3.'An electrode composed of from five to fifty per cent. of an earth metal titanofluorid, less than fifteen per cent. of an alkaline titano-fiuorid, and carbon.

4:. An electrode "containing substantially thirty per cent. of an earth metal titanofiuorid, one per cent. of an alkaline titano-' fiuorid, and carbon. y

5. An electrode composed of an earth metal titano-fiuorid, an alkaline titanofluorid and carbon.

6. A carbon electrodecontaming cerium titano-fiuorid and an alkaline titano-fluorid.

7. A carbon electrode containing cerium titano-fiuorid and sodium titano-fluorid.

8. An electrode composed substantially of cerium titano-fluorid thirty per cent, sodium JOSEPH L. B. HAYDEN.

Witnesses:

BENJAMIN B. HULL, HELEN Onrono. 

